Here is the full list of all 31 Zombie Kill of the Week - there are Reborn achievements.
Go see your friends!
Get 5 meats in a single game from the fridge.
Survive 4 minutes in Homerun. (Challenge mode)
Survive 4 minutes in RedSnow. (Challenge mode)
Survive 4 minutes in Arise. (Challenge mode)
Survive 4 minutes in Area 73. (Challenge mode)
Slaughter 10 000 zombies in total.
Survive 4 minutes in Night At The Mall. (Challenge mode)
Kill the zombie bear before he takes your money.
And still going?
Get promoted to rank 30.
Encounter all 3 tanks, and get them killed.
Find the fridge and make it disappear. Repeat 3 times.
Help your friend in need.
You have wasted 5 hours of your life.
Get a shotgun, and make 20 zombies crawl in front of you.
Stand still for 30 seconds, wondering about your life.
Get the GiGaGirlGannon, and kill 10 zombies within 10 seconds.
Slaughter 5000 zombies in total.
Grill 50 zombies with flame in a single match.
Slice 53 zombies in one match.
Get yourself killed with a grenade. Dumbass.
Kill 15 zombies with a katana, and 25 with saw in one match.
You have played ZKW for an hour.
Own atleast 5000$ in one match
Open all areas in a single match.
Survive 4 minutes in Abandoned Hospital. (Challenge mode)
Fight your way to round 20.
Get promoted to rank 10.
Get 100 headshots in one match.
Zombies are not ment to fly.